SMA Connector Vs RP-SMA Connector

SMA and RP-SMA connectors are very similar and often cause confusion. SMA stands for ‘SubMiniature Version A’ and is an RF connector used on high frequency systems. It is considered to be a robust connection due to the thread coupling and the excellent grounding provided. The RP stands for ‘Reverse Polarity’, meaning that the centre pin is moved to the female connector. SMA and RP-SMA connectors are not compatible for use together, they will either not couple or leave an air gap, depending on which combination is used. RP-SMA connectors are typically used for Wi-Fi antennas and some LoRa antennas. Whereas, SMA connectors are normally used for most other RF… Read More

Splitter Cables

We strongly discourage the use of splitter cables to overcome the need for dual / quad input routers, they will have a detrimental effect on the performance, as the power going in to each receiver is halved. This means that the distance that the signal can reach is reduced and the data throughput is reduce.

Multi-Port Routers

When an antenna has multiple 4G/5G ports, each port connects to a receiver on the internal radio, each receiver on the router is expecting a separate, independent signal.Using a single antenna on a dual input device will still operate fine, however to get the maximum speed, two single input or one dual input antenna is needed.Note: Dual input antennas use 2 separate antenna elements, they are not a signal antenna split across two cables.

Polarisation

Polarisation refers to the angle in which the radio waves are transmitted from the antenna, vertical polarisation refers to waves that are propagating up and down, horizontal polarisation refers to waves that are propagating left and right, and cross polarisation refers to waves propagating at a 45 degree angle. Most cellular masts in the UK, use cross polarised antennas and due to signal correlation within LTE technology, antennas can normally receive all types of signal.‚ÄčAntennas will be manufactured for single, dual or cross polarisation. For dual polarised antennas, there may be a H and V label on the antenna ports. Typically the V would connect to the main cellular input… Read More

Are You Using the Right Antenna

High gain antennas are great for reaching large distances as long as the antenna is mounted at the correct angle to direct the signal towards the tower. Lower gain antennas are great for when the height of the antenna or tower is a factor, as a larger vertical area is covered. A high gain antenna is not always the answer.

Correctly Mount the Antenna

The higher the gain of the antenna, the flatter and wider the donut shape is and the further the signal will travel. However, due to the flattened radiation pattern, there is less vertical tolerance and more precision is needed when mounting the antenna. When testing the antenna before permanent installation, do not test with the antenna laying on its side, as this will give poor result that are not a true reflection of the antennas performance. For the reasons mentioned above, the antenna needs to be mounted accurately.

Omni-Directional Vs Directional Antennas

Omni-directional antennas radiate evenly in every horizontal direction, whereas a directional antennas radiate mostly in a single horizontal direction. Typically, directional antennas will reach a greater distance as all of the antenna power is focused in one direction, however the antenna must be pointed directly at the cellular mast being used. To find your closest mast go to www.cellmapper.net or www.mastdata.com.

Antenna Radiation Pattern

A 0dBi antenna radiates in a perfect sphere, when gain is applied to the signal, the radiation pattern is compressed vertically and stretch horizontally, creating a donut / disc shape. The router transmits a fixed amount of power, the antenna does not increase or decrease the power of the signal, it focuses the signal to help transmit over larger distances. The higher the gain of the antenna, the flatter and wider the donut shape is and the further the signal will travel.